Valve.



E. -P- ALLEN, DECD.

- l. A. ALLER, Bxncu'rnlx.

VALVE.

union-1011 runnin. 1, 190s.y

Patented Jan. 14,1913.

77?'6726/51565, l Zzvenor A UMTED srA'rEs PATENT onirica.,

EVEBETT P. ALLEN, 0F CHICAGO, ILLINOIS; MARY A. ALLEN, EXECUTBIX OF SAID EVERETT P. ALLEN, DECEASED, ASSIGNOR TO DOLE VALVE COMPANY, 0F CHICAGO,

ILLINOIS, A COBJOBATIGN 0F ILLINOIS.

VALVE.

Specific-ation of Letters Patent.

Patented J an. 14, 1913.

Application filed March 1, 1906. `Serial No. 303,572.

To all whom t may concern Be it known that I, EvEREr'r P. ALLEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Valves, .of which the out the several figures.

Die

In the drawing I have shown a valve embodying my invention adapted to be used as an admission valve for steam radiators and the like. In this construction I have shown the valvebody A containing the valve seat A1. The seat engaging part B \which engages the seat to close the opening is connected with/fprojecting part B1 which, as herein shown, is hollow and is provided with an internal screw thread engaged by the threaded end B2 of the valve stem. The projecting part B1 when the valve stem is rotated slides up and down in the guiding part- C. This guiding part may be of any suitable construction, and, as herein shown, is a partof the valve casing. This guiding partis preferably provided with grooves C1 into which fit projecting guides C1 on the projecting part B1, thus prevent-ing'the said part B1 from rotating when the stem is rotated. A sleeve D surrounds the valve stem and is attached to the guiding part C. W'ithin the sleeve D is a spring E which engages a stationary part D1 associated with the valve casing. The pressure of the spring may be regulated by means of a nut E1 working on a threaded part of the valve stem. This nut may directly engage the spring, or a ball bearing arrangement may be provided by using a ring E2 which engages the spring and whichv provided with a. groove containing a series ofballsEa. Associated with the valve stem'iis' a composition disk F of any suitable'material, 'which is engaged: on one side by a disk holder F1 attached to the valve stem and on the other side by a stationary part D1 associated with the Valve casing. The parts D1 and F1 are preferably provided with annular engaging parts G which engage the opposite sides of the packing ring. It will be seen that the spring E when the nut 'i411 is tightened exerts a force tending to lift the valve stem. This causes the composition disk F to be tightly gripped between the parts D1 and F1, and hence prevents the steam or other Huid from escaping. It will further be seen that .the tension of the spring may be adjusted so as to secure any desired pressure by means of the nut E1, and that a simple, efficient and successful joint is provided which does not interfere with the operation of the valve. A nut I is connected with the valve stem and engages the sleeve D so as to prevent the valve stem being pushed down when the stem is being rotated. vWhen it is desired to open or close the valve, the valve stem is rota-ted by means of the handpiece at the top. This rotation causes the part B to move up or down depending upon the direction of rotation so as to close or open the valve, and it does no t in any manner interfere with the joint.

I have described in detail a particular construction. embodying my invention, but it is of course evident that the partsmay be varied in form, construction and arrangement without departing from the spirit of my invention, and I therefore do not limit myself to the particular construction and arrangement shown.

I claim:

l. A valve comprising a casing made up of three separable sections, a valve stem, a part on the valve stem and a stationary part, a composition disk between them, a spring surrounding the valve stem engaging at one end said stationary part and at the other end an engaging piece on the valve stem so as to clamp the disk between the said two parts, said spring inclosed in one section of the casing, and means for adjusting the tension of said spring so as to vary the clamping pressure.

2. A valve comprising a casing, a rotatable valve stem mountedtherein, a seatengaging part movably connected with the valve stem, a composition disk associated with said stem, two engaging parts therefor one on the stem and the other attached to the casing, a spring for forcing said two parts toward each other to clamp the disk, means tor adjusting said spring independent ot said seat-engaging part, said means contained within the casing so as to be inaccessible when the parts are in position.

3. A valve comprising a casing, a rotatable valve stem mounted therein, a seatengaging part movably connected with the valve stem, a composition disk associated with said stem, two engaging parts therefor one on the stem and the other attached to the casing, a spring for forcing said two parts toward each other to clamp the disk, means for adjusting said spring independent of said seat-engaging part, said means contained within the casing so as to be inaccessible when the parts are in position, and a device for preventing longitudinal movement of the stem.

4. A. valve comprising a casing, a rotatable stem therein, a composition disk surrounding said stem, two parts between which said composition disk is clamped, one part on the stem and the other on t-he casing, a spring surrounding said stein engaging at one end a part associated With the casing and at the other end a ball bearing cup surrounding the stem but loose thereon, a nut screw threaded on the stem opposed to the ball bearing cup, and balls in said cup engaged by saidpnut.

insonne 5. A valve comprising a casing, a rotatable stem therein, a composition disk surrounding said stem, two parts between which said composition disk is clamped, one part on the stem and the other on the casing, a spring surrounding said stem engaging at one end a part associated with the casing and at the other end a ball bearing cup surrounding the stem but loose thereon, a nut screw threaded on the stem opposed to the ball bearing cup, balls in said cup engaged by said nut, and a limiting device on the stem adapted to engage the' casing so as to prevent longitudinal movement of the stem.

6. A valve comprising a casing, a rotatable stem therein, opposed seating parts, one on the stem and one fixed in position, a spring surrounding said stem engaging at one end a part associated with the casing, a ball bearing cup engaged by the other end ot said spring and surrounding said stem but loose thereon, a nut screw-threaded on the stem opposed to the ball bearing cup and balls in said cup engaged by said nut, said ball bearing cup inclosed in said casing.

PnRoIvAL N. TRUMAN, EDNA l. REYNOLDS. 

